*{
    margin: 0;
    padding: 0;
}
.zl-all {
    height: 800px;
    background-color:#d3d3d3;
    /* background-color: rgb(red, green, blue); */
}

.zhead {
    height: 100px;
    background-color: rgb(277, 277, 277);
    font-size: 24px;
    line-height: 150px;
}
.zhead span{
    margin-left: 33%;
}
.zmain{
    height: 200px;
    background-color: blue;
}
.zfot{
    width: 100%;
    height: 300px;
    background-color: #ffffff;
}
.zfot div{
    display: flex;
    justify-content: space-between;
    align-items: center;
}